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Get more out of your laptop computer, desktop, server, or Mac® system and extend its life with Crucial DDR2 memory. One of the easiest, fastest, and most affordable ways to boost the performance of a slow older computer is maxing out its RAM. If you have five minutes, you can install your own Crucial DDR2 modules and instantly improve your system responsiveness and ability to multitask.

Use the Crucial Advisor™ tool or System Scanner to find guaranteed compatible DDR2 memory upgrades when you order on Crucial.com. Visit our Memory Information Guide for more information about how DDR2 compares to DDR and to find everything you need to upgrade with ease.

24 DDR2 upgrades

Crucial 1GB DDR2-667 UDIMM

DDR2 PC2-5300 • CL=5 • UNBUFFERED • NON-ECC • DDR2-667 • 1.8V • 128MEG X 64 •

£15.59 inc. VAT*
Image for Crucial 1GB DDR2-800 UDIMM from Crucial UK GBP Store Organization

Crucial 1GB DDR2-800 UDIMM

DDR2 PC2-6400 • CL=6 • UNBUFFERED • NON-ECC • DDR2-800 • 1.8V • 128MEG X 64 •

£15.59 inc. VAT*

Crucial 1GB DDR2-667 SODIMM

DDR2 PC2-5300 • CL=5 • UNBUFFERED • NON-ECC • DDR2-667 • 1.8V • 128MEG X 64 •

£15.59 inc. VAT*

Crucial 1GB DDR2-800 SODIMM

DDR2 PC2-6400 • CL=6 • UNBUFFERED • NON-ECC • DDR2-800 • 1.8V • 128MEG X 64 •

£15.59 inc. VAT*

Crucial 2GB DDR2-667 SODIMM

DDR2 PC2-5300 • CL=5 • UNBUFFERED • NON-ECC • DDR2-667 • 1.8V • 256MEG X 64 •

£26.39 inc. VAT*

Crucial 2GB DDR2-800 SODIMM

DDR2 PC2-6400 • CL=6 • UNBUFFERED • NON-ECC • DDR2-800 • 1.8V • 256MEG X 64 •

£26.39 inc. VAT*

Crucial 2GB DDR2-667 SODIMM Memory for Mac

DDR2 PC2-5300 • CL=5 • UNBUFFERED • NON-ECC • DDR2-667 • 1.8V • 256MEG X 64 • LEAD FREE • HALOGEN FREE • FOR MAC

£26.39 inc. VAT*

Crucial 2GB DDR2-800 SODIMM Memory for Mac

DDR2 PC2-6400 • CL=6 • UNBUFFERED • NON-ECC • DDR2-800 • 1.8V • 256MEG X 64 • LEAD FREE • HALOGEN FREE • FOR MAC

£26.39 inc. VAT*

Crucial 2GB DDR2-666 UDIMM

DDR2 PC2-5300 • CL=5 • UNBUFFERED • NON-ECC • DDR2-667 • 1.8V • 256MEG X 64 •

£27.59 inc. VAT*

Crucial 2GB DDR2-800 UDIMM

DDR2 PC2-6400 • CL=6 • UNBUFFERED • NON-ECC • DDR2-800 • 1.8V • 256MEG X 64 •

£27.59 inc. VAT*

Crucial 2GB Kit (2 x 1GB) DDR2-666 UDIMM

DDR2 PC2-5300 • CL=5 • UNBUFFERED • NON-ECC • DDR2-667 • 1.8V • 128MEG X 64 •

£29.99 inc. VAT*
Image for Crucial 2GB Kit (2 x 1GB) DDR2-800 UDIMM from Crucial UK GBP Store Organization

Crucial 2GB Kit (2 x 1GB) DDR2-800 UDIMM

DDR2 PC2-6400 • CL=6 • UNBUFFERED • NON-ECC • DDR2-800 • 1.8V • 128MEG X 64 •

£29.99 inc. VAT*

Crucial 2GB Kit (2 x 1GB) DDR2-666 SODIMM

DDR2 PC2-5300 • CL=5 • UNBUFFERED • NON-ECC • DDR2-667 • 1.8V • 128MEG X 64 •

£29.99 inc. VAT*

Crucial 2GB Kit (2 x 1GB) DDR2-800 SODIMM

DDR2 PC2-6400 • CL=6 • UNBUFFERED • NON-ECC • DDR2-800 • 1.8V • 128MEG X 64 •

£29.99 inc. VAT*

Crucial 4GB Kit (2 x 2GB) DDR2-667 SODIMM Memory for Mac

DDR2 PC2-5300 • CL=5 • UNBUFFERED • NON-ECC • DDR2-667 • 1.8V • 256MEG X 64 • LEAD FREE • HALOGEN FREE • FOR MAC

£52.79 inc. VAT*

Crucial 4GB Kit (2 x 2GB) DDR2-800 SODIMM Memory for Mac

DDR2 PC2-6400 • CL=6 • UNBUFFERED • NON-ECC • DDR2-800 • 1.8V • 256MEG X 64 • LEAD FREE • HALOGEN FREE • FOR MAC

£52.79 inc. VAT*

Crucial 4GB Kit (2 x 2GB) DDR2-667 SODIMM

DDR2 PC2-5300 • CL=5 • UNBUFFERED • NON-ECC • DDR2-667 • 1.8V • 256MEG X 64 •

£52.79 inc. VAT*

Crucial 4GB Kit (2 x 2GB) DDR2-800 SODIMM

DDR2 PC2-6400 • CL=6 • UNBUFFERED • NON-ECC • DDR2-800 • 1.8V • 256MEG X 64 •

£52.79 inc. VAT*

Crucial 4GB Kit (2 x 2GB) DDR2-667 UDIMM

DDR2 PC2-5300 • CL=5 • UNBUFFERED • NON-ECC • DDR2-667 • 1.8V • 256MEG X 64 •

£53.99 inc. VAT*

Crucial 4GB Kit (2 x 2GB) DDR2-800 UDIMM

DDR2 PC2-6400 • CL=6 • UNBUFFERED • NON-ECC • DDR2-800 • 1.8V • 256MEG X 64 •

£53.99 inc. VAT*

Crucial 4GB DDR2-667 UDIMM

DDR2 PC2-5300 • CL=5 • UNBUFFERED • NON-ECC • DDR2-667 • 1.8V • 512MEG X 64 •

£113.99 inc. VAT*

Crucial 4GB DDR2-800 SODIMM

DDR2 PC2-6400 • CL=6 • UNBUFFERED • NON-ECC • DDR2-800 • 1.8V • 512MEG X 64 •

£113.99 inc. VAT*

Crucial 8GB Kit (2 x 4GB) DDR2-666 UDIMM

DDR2 PC2-5300 • CL=5 • UNBUFFERED • NON-ECC • DDR2-667 • 1.8V • 512MEG X 64 •

£226.79 inc. VAT*

Crucial 8GB Kit (2 x 4GB) DDR2-800 SODIMM

DDR2 PC2-6400 • CL=6 • UNBUFFERED • NON-ECC • DDR2-800 • 1.8V • 512MEG X 64 •

£226.79 inc. VAT*